SE0401313D0 - Perforated sound attenuating structure - Google Patents
Perforated sound attenuating structureInfo
- Publication number
- SE0401313D0 SE0401313D0 SE0401313A SE0401313A SE0401313D0 SE 0401313 D0 SE0401313 D0 SE 0401313D0 SE 0401313 A SE0401313 A SE 0401313A SE 0401313 A SE0401313 A SE 0401313A SE 0401313 D0 SE0401313 D0 SE 0401313D0
- Authority
- SE
- Sweden
- Prior art keywords
- sound attenuating
- attenuating structure
- perforated sound
- perforated
- axial direction
- Prior art date
Links
- 238000005192 partition Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/023—Helmholtz resonators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Pipe Accessories (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The holes (46,46') are formed between each perforated panel (42,42') at the flow path side. The perforated panels are extended to the axial direction of a cylindrical piping path (41). The partition plate (43,43') divides the axial direction of the piping path into number of closets (44,44').
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003146579 | 2003-05-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0401313D0 true SE0401313D0 (en) | 2004-05-24 |
SE0401313L SE0401313L (en) | 2004-11-24 |
SE525807C2 SE525807C2 (en) | 2005-05-03 |
Family
ID=32588733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0401313A SE525807C2 (en) | 2003-05-23 | 2004-05-24 | Noise reduction structure for air supply piping, has holes which are formed between each perforated panel at flow path side |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN1311186C (en) |
SE (1) | SE525807C2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI392838B (en) * | 2010-06-10 | 2013-04-11 | Univ Nat Taiwan Normal | Whistle box structure |
CN102996302B (en) * | 2012-08-11 | 2016-01-27 | 郭荣 | A kind of silencing apparatus simultaneously can eliminating wide band and narrow frequency band noise |
JP6629627B2 (en) * | 2016-02-22 | 2020-01-15 | 三菱重工業株式会社 | Noise reduction structure and supercharging device |
US10208880B2 (en) * | 2016-12-30 | 2019-02-19 | Emerson Process Management Regulator Technologies, Inc. | Noise attenuators for use with process control devices |
JP2021018357A (en) * | 2019-07-22 | 2021-02-15 | 株式会社デンソー | Sound absorption device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2093003U (en) * | 1991-05-10 | 1992-01-15 | 刘余厚 | Liquid ultraviolet treatment device |
JP3026694B2 (en) * | 1993-04-19 | 2000-03-27 | 河西工業株式会社 | Soundproofing materials for vehicles |
JPH0849521A (en) * | 1994-08-08 | 1996-02-20 | Hino Motors Ltd | Muffler |
CN2407133Y (en) * | 2000-01-25 | 2000-11-22 | 中国科学院声学研究所 | Tubular perforated plate sound absorption construction |
CN2494914Y (en) * | 2000-09-15 | 2002-06-12 | 上海众汇泡沫铝材有限公司 | Foam aluminium sheet type noise absorber |
CN2444295Y (en) * | 2000-09-20 | 2001-08-22 | 上海博旭复合装饰材料有限公司 | Combined sound absorption board |
JP2003050586A (en) * | 2000-09-29 | 2003-02-21 | Kobe Steel Ltd | Porous soundproof structure and method of manufacturing the same |
-
2004
- 2004-05-21 CN CNB200410047512XA patent/CN1311186C/en not_active Expired - Lifetime
- 2004-05-24 SE SE0401313A patent/SE525807C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1311186C (en) | 2007-04-18 |
SE0401313L (en) | 2004-11-24 |
SE525807C2 (en) | 2005-05-03 |
CN1573199A (en) | 2005-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |